基于激光偏置的齿轮精密测量  

Precision Measurement of Gears Based on Laser Bias

作　　者：徐桂才 梅宁 宋爱平[1] 蒋凯佳 Xu Guicai;Mei Ning;Song Aiping;Jiang Kaijia(College of Mechanical Engineering,Yangzhou University,Yangzhou 225000,Jiangsu,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225000

出　　处：《应用激光》2024年第3期124-131,共8页Applied Laser

摘　　要：在进行齿轮激光测量时,激光束所在的空间直线通常穿过齿轮中心,测量值为激光位移传感器至齿轮渐开线齿面的空间距离。但激光束与被测齿面法矢量的夹角过大,影响测量的精度和数据的稳定性。因此,提出一种激光偏置的齿轮精密测量,使激光束相对齿轮轴线偏置一段距离,激光束与齿面测量点法矢量夹角减小,有效提高激光测量精度与稳定性。计算出了最佳的偏置量范围,通过检测齿轮齿形分析了齿轮的齿距偏差和螺旋线偏差。利用理论推算与实验验证的方法,得出该种测量方法测量精度可达到1μm,测量数据波动小,适用于齿轮高精度测量。During laser gear measurement,the laser beam typically intersects the gear′s center,measuring the spatial distance from the laser displacement sensor to the involute tooth surface.However,the substantial angle between the laser beam and the normal vector of the measured tooth face compromises measurement accuracy and data stability.To address this issue,this paper proposes a laser offset measurement method for gears.By offsetting the laser beam from the gear axis,the angle between the laser beam and the tooth surface normal vector is reduced,thereby enhancing measurement accuracy and stability.The paper calculates the optimal offset range and analyzes gear pitch deviation and helix deviation by examining gear tooth shape.Theoretical projection and experimental verification confirm the method′s advantages of high accuracy and minimal data fluctuation,rendering it suitable for high-precision gear measurement.

关 键 词：齿轮测量 激光偏置 非接触式 激光位移传感器 

分 类 号：TH74[机械工程—光学工程]